diff --git a/src/hotspot/share/gc/shenandoah/shenandoahMarkingContext.inline.hpp b/src/hotspot/share/gc/shenandoah/shenandoahMarkingContext.inline.hpp
index 5cb3bd5c353..f829d2aa232 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahMarkingContext.inline.hpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahMarkingContext.inline.hpp
@@ -29,13 +29,11 @@
 #include "gc/shenandoah/shenandoahMarkingContext.hpp"
 
 inline bool ShenandoahMarkingContext::mark_strong(oop obj, bool& was_upgraded) {
-  shenandoah_assert_not_forwarded(NULL, obj);
-  return (! allocated_after_mark_start(obj)) && _mark_bit_map.mark_strong(cast_from_oop<HeapWord*>(obj), was_upgraded);
+  return !allocated_after_mark_start(obj) && _mark_bit_map.mark_strong(cast_from_oop<HeapWord*>(obj), was_upgraded);
 }
 
 inline bool ShenandoahMarkingContext::mark_weak(oop obj) {
-  shenandoah_assert_not_forwarded(NULL, obj);
-  return (! allocated_after_mark_start(obj)) && _mark_bit_map.mark_weak(cast_from_oop<HeapWord *>(obj));
+  return !allocated_after_mark_start(obj) && _mark_bit_map.mark_weak(cast_from_oop<HeapWord *>(obj));
 }
 
 inline bool ShenandoahMarkingContext::is_marked(oop obj) const {